CN103892693B - Hydropenia detection method, hydropenia detecting device and steam cooking vessel - Google Patents
Hydropenia detection method, hydropenia detecting device and steam cooking vessel Download PDFInfo
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- CN103892693B CN103892693B CN201410126826.2A CN201410126826A CN103892693B CN 103892693 B CN103892693 B CN 103892693B CN 201410126826 A CN201410126826 A CN 201410126826A CN 103892693 B CN103892693 B CN 103892693B
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Abstract
The invention provides one hydropenia detection method, a kind of hydropenia detecting device and a kind of steam cooking vessel, wherein, described hydropenia detection method, including: obtain the interval disconnected between connection of the heat-generating pipe being installed in described steam generator；Judge that whether described interval is more than predetermined threshold, described interval greater than described predetermined threshold time, it is determined that described steam generator is in exsiccosis.Pass through technical scheme, steam generator heat-generating pipe disconnect with connect interval greater than predetermined threshold time, accurately judge that steam generator is in exsiccosis, can improve the accuracy of hydropenia detection, avoid steam cooking vessel circulating-heating waste electric power resource simultaneously.
Description
Technical field
The present invention relates to steam cooking technical field, in particular to a kind of hydropenia detection method, a kind of hydropenia detecting device and a kind of steam cooking vessel.
Background technology
In recent years, health diet is increasingly paid attention to by people, and the requirement of culinary art effect is also more and more higher, little by little, it was recognized that steaming and decocting is well positioned to meet requirement in fact.Food is heated processing by the huge latent heat released during due to steaming and decocting (i.e. steam heating) dependence steam liquefied, and advantage is a lot: one, and cooking speed is fast；Its two, due to the easy diffusibility of gas, food is heated also quite uniform, thus avoiding overheated the burning of part to cause that nutritive value reduces；They are three years old; owing to steam cooking process reducing the oxygen concentration in air; the nutritional labeling that great majority are oxidized easily plays a very good protection; and steaming and decocting can also keep the moisture in food to make it be not easy to run off; therefore the food that steaming and decocting is out is not only of high nutritive value and mouthfeel is fresh and tender, likable.
At present, the most general utilizes steam heat food mode, is utilize lower heat-generating disc, water is directly heated produce steam and meets the demand of culinary art.But whether hydropenia mainly has following several ways at detection water tank place.
Mode one: adopt the mode of magnetic reed switch float.Adopt this kind of mode, just can float owing to float itself needs to be immersed in the water certain volume, so, sensed water level in this way, water there remains much often, and has been detected by the operation of water tank lacks water arrestment, and this situation is particularly evident when water tank floor space is bigger.
Mode two: adopt three pieces of metallic plates, judges the mode of water level by detecting the resistance variations of water.By determining the decrease speed of water level within the specific limits, know the hydropenia moment by inference, although carrying out conversion by water level decreasing speed can carry out estimating the water tank lacks water time, but starting the situation (when metallic plate only has one of touching) that water level is just very low, basic just cannot calculating even cannot be detected, and equally exists bigger wrong report and is likely to.If it addition, the viscosity of water is relatively big, if forming moisture film between two metallic plates, also resulting in and hydropenia should be reported without situation about detecting.
Mode three: temperature controller is set in a vapor generator, temperature controller disconnects when 120 DEG C, reset conducting when 90 DEG C, detecting water tank lacks water in this way, equipment control circuit does not know that hydropenia has occurred and that, though water tank lacks water, it is still within circulating-heating, only end loop could heat when reaching predetermined cooking time, waste electric power resource, and it would furthermore be possible to the situation that when heat time heating time terminates, food does not cook occurs.
Therefore, how detection water tank whether hydropenia becomes technical problem urgently to be resolved hurrily at present accurately.
Summary of the invention
It is contemplated that at least solve one of technical problem of existence in prior art or correlation technique.
For this, it is an object of the present invention to propose a kind of can the heat-generating pipe of steam generator disconnect with connect interval greater than predetermined threshold time, accurately judge that steam generator is in the hydropenia detection method of exsiccosis.
Further object is that and propose a kind of hydropenia detecting device.
Another purpose of the present invention is in that to propose a kind of steam cooking vessel.
For achieving the above object, embodiment according to the first aspect of the invention, it is proposed that a kind of hydropenia detection method for steam generator, including: obtain the interval disconnected between connection of the heat-generating pipe being installed in described steam generator；Judge that whether described interval is more than predetermined threshold, described interval greater than described predetermined threshold time, it is determined that described steam generator is in exsiccosis.
Hydropenia detection method according to an embodiment of the invention, by obtaining the interval disconnecting and connecting of heat-generating pipe in steam generator, when the state that the water yield is sufficient, the interval that in steam generator, heat-generating pipe disconnects with connection will be shorter, then this interval is less than predetermined threshold, judge to be in water yield abundance state, and when exsiccosis, the time that steam generator natural cooling temperature reduces will be longer, then should interval greater than predetermined threshold, judge to be in exsiccosis, detect whether in this way to be in exsiccosis, simple in construction, level of integrated system is high, and with prior art in by switch float, the detection mode of temperature controller and three pieces of metallic plates is compared, detection mode is more accurate, reduce the probability of hydropenia wrong report, and it is lower in cost.
It addition, hydropenia detection method according to the above embodiment of the present invention, it is also possible to there is following additional technical characteristic:
According to one embodiment of present invention, also include: detect the temperature of described steam generator；Judge that whether the temperature of described steam generator is more than the first predetermined temperature, when the temperature of described steam generator is more than described first predetermined temperature, disconnects the heat-generating pipe of described steam generator, and starts timing；After disconnecting the heat-generating pipe of described steam generator, it is judged that whether the temperature of described steam generator, less than the second predetermined temperature, when the temperature of described steam generator is less than described second predetermined temperature, is connected the heat-generating pipe of described steam generator, and terminated timing；Obtaining the interval between described end timing and described beginning timing, wherein, described first predetermined temperature is more than described second predetermined temperature.
Hydropenia detection method according to an embodiment of the invention, in the running of steam generator, when tempering phase or hydropenia, if be detected that the temperature of steam generator is higher than the first predetermined temperature, show that steam generator is overheated, now disconnect the heat-generating pipe of steam generator, and start timing, after a predetermined time, if be detected that the temperature of steam generator is lower than the second predetermined temperature, for ensureing the temperature stabilization of steam generator, avoid steam-generator temperature too low, then need to connect the heat-generating pipe of steam generator, now terminate timing, if this terminate timing with start timing interval greater than predetermined threshold, then illustrate that now equipment is already at exsiccosis.
According to one embodiment of present invention, before whether the described temperature judging described steam generator is less than the second predetermined temperature, also include: search described output relation table to obtain the output corresponding with described steam-generator temperature, supply water to described steam generator with described output, wherein, in described output relation table, storage has the temperature of described steam generator and the output corresponding with described steam-generator temperature.
Hydropenia detection method according to an embodiment of the invention, by after disconnecting the heat-generating pipe of steam generator, control to supply water to steam generator, preferably, excessive water can be provided, if Water in Water Tanks amount is sufficient, excessive water then can be provided to steam generator, the temperature of steam generator will be reduced to the second predetermined temperature (or below second predetermined temperature) at short notice, namely the heat-generating pipe of steam generator can be connected at short notice, now the interval of the heat-generating pipe off and on of steam generator is certainly less than predetermined threshold, judge that water tank is in water yield abundance state；On the contrary, if water tank is in exsiccosis, then after disconnecting the heat-generating pipe of steam generator, cannot supply water to steam generator, the temperature of steam generator drops to the time of the second predetermined temperature (or below second predetermined temperature) will be long accordingly, now the interval of the heat-generating pipe off and on of steam generator is naturally larger than predetermined threshold, it is determined that water tank is in exsiccosis.
Certainly, interval and predetermined threshold relatively time, by providing excessive water after disconnecting the heat-generating pipe of steam generator, the rapid drop in temperature of steam generator can be made, the heat-generating pipe reducing steam generator disconnects and the interval connected, thus improving the resolution of hydropenia detection, improve the accuracy of hydropenia detection.
According to one embodiment of present invention, described predetermined threshold is relevant to the difference of described first predetermined temperature and described second predetermined temperature, and described first predetermined temperature is more big with the difference of described second predetermined temperature, and described predetermined threshold is more big.
Hydropenia detection method according to an embodiment of the invention, due to after disconnecting the heat-generating pipe of steam generator, the waste heat of the accumulation in steam generator still can make the temperature of steam generator continue to rise, when there being excessive water supply, can dropping to the second predetermined temperature within a certain period of time, therefore the difference of the first predetermined temperature and the second predetermined temperature also can affect the temperature of steam generator and is reduced to the time of the second predetermined temperature by the first predetermined temperature.
Specifically, the difference of the first predetermined temperature and the second predetermined temperature is more big, the time that then temperature of steam generator is reduced to the second predetermined temperature by the first predetermined temperature is more long, it is bigger that the setting of predetermined threshold also need to set accordingly, and the difference of the first predetermined temperature and the second predetermined temperature is more little, the time that then temperature of steam generator is reduced to the second predetermined temperature by the first predetermined temperature is more short, and it is less that the setting of predetermined threshold also need to set accordingly.
According to one embodiment of present invention, also include: when judging that described steam generator is in exsiccosis, point out described steam generator to be in exsiccosis, and disconnect the heat-generating pipe of described steam generator.
Hydropenia detection method according to an embodiment of the invention, judging steam generator (water tank, water tank to steam generator supply water) be in exsiccosis time, prompting steam generator be in exsiccosis, for instance: can pass through display interface show, report to the police or voice message prompting be in exsiccosis.When judging to be in exsiccosis, disconnect the heat-generating pipe of steam generator, avoid the electric power resource waste that circulating-heating causes on the one hand, the safety problem that steam generator dry combustion method causes can be avoided on the other hand.
Embodiment according to the second aspect of the invention, it is proposed that a kind of hydropenia detecting device for steam generator, including: acquiring unit, for obtaining the interval disconnected between connection of the heat-generating pipe being installed in described steam generator；Judging unit, it is judged that described acquiring unit obtain interval whether more than predetermined threshold, described interval greater than described predetermined threshold time, it is determined that described steam generator is in exsiccosis.
Hydropenia detecting device according to an embodiment of the invention, by obtaining the interval disconnecting and connecting of heat-generating pipe in steam generator, when the state that the water yield is sufficient, the interval that in steam generator, heat-generating pipe disconnects with connection will be shorter, then this interval is less than predetermined threshold, judge to be in water yield abundance state, and when exsiccosis, the time that steam generator natural cooling temperature reduces will be longer, then should interval greater than predetermined threshold, judge to be in exsiccosis, detect whether in this way to be in exsiccosis, simple in construction, level of integrated system is high, and with prior art in by switch float, the detection mode of temperature controller and three pieces of metallic plates is compared, detection mode is more accurate, reduce the probability of hydropenia wrong report, and it is lower in cost.
According to one embodiment of present invention, also include: detection unit, detect the temperature of described steam generator；Whether described judging unit is additionally operable to the temperature judging described steam generator more than the first predetermined temperature, when the temperature of described steam generator is more than described first predetermined temperature, disconnects the heat-generating pipe of described steam generator, and starts timing；Whether described judging unit is additionally operable to the temperature judging described steam generator less than the second predetermined temperature, when the temperature of described steam generator is less than described second predetermined temperature, connects the heat-generating pipe of described steam generator, and terminates timing；Described acquiring unit is specifically for obtaining the interval between described end timing and described beginning timing, and wherein, described first predetermined temperature is more than described second predetermined temperature.
Hydropenia detecting device according to an embodiment of the invention, in the running of steam generator, when tempering phase or hydropenia, if be detected that the temperature of steam generator is higher than the first predetermined temperature, show that steam generator is overheated, now disconnect the heat-generating pipe of steam generator, and start timing, after a predetermined time, if be detected that the temperature of steam generator is lower than the second predetermined temperature, for ensureing the temperature stabilization of steam generator, avoid steam-generator temperature too low, then need to connect the heat-generating pipe of steam generator, now terminate timing, if this terminate timing with start timing interval greater than predetermined threshold, then illustrate that now equipment is already at exsiccosis.
According to one embodiment of present invention, before whether the described temperature judging described steam generator is less than the second predetermined temperature, described judging unit is additionally operable to when the temperature of described steam generator is more than described first predetermined temperature, disconnect the heat-generating pipe of described steam generator, search described output relation table to obtain the output corresponding with described steam-generator temperature, supply water to described steam generator with described output, wherein, in described output relation table, storage has the temperature of described steam generator and the output corresponding with described steam-generator temperature.
Hydropenia detecting device according to an embodiment of the invention, by after disconnecting the heat-generating pipe of steam generator, control to supply water to steam generator, preferably, excessive water can be provided, if Water in Water Tanks amount is sufficient, excessive water then can be provided to steam generator, the temperature of steam generator will be reduced to the second predetermined temperature (or below second predetermined temperature) at short notice, namely the heat-generating pipe of steam generator can be connected at short notice, now the interval of the heat-generating pipe off and on of steam generator is certainly less than predetermined threshold, judge that water tank is in water yield abundance state；On the contrary, if water tank is in exsiccosis, then after disconnecting the heat-generating pipe of steam generator, cannot supply water to steam generator, the temperature of steam generator drops to the time of the second predetermined temperature (or below second predetermined temperature) will be long accordingly, now the interval of the heat-generating pipe off and on of steam generator is naturally larger than predetermined threshold, it is determined that water tank is in exsiccosis.
Certainly, interval and predetermined threshold relatively time, by providing excessive water after disconnecting the heat-generating pipe of steam generator, the rapid drop in temperature of steam generator can be made, the heat-generating pipe reducing steam generator disconnects and the interval connected, thus improving the resolution of hydropenia detection, improve the accuracy of hydropenia detection.
According to one embodiment of present invention, also include: Tip element, for when described judging unit judges that described steam generator is in exsiccosis, pointing out described steam generator to be in exsiccosis, and disconnect the heat-generating pipe of described steam generator.
Hydropenia detecting device according to an embodiment of the invention, judging steam generator (water tank, water tank to steam generator supply water) be in exsiccosis time, prompting steam generator be in exsiccosis, for instance: can pass through display interface show, report to the police or voice message prompting be in exsiccosis.When judging to be in exsiccosis, disconnect the heat-generating pipe of steam generator, avoid the electric power resource waste that circulating-heating causes on the one hand, the safety problem that steam generator dry combustion method causes can be avoided on the other hand.
Embodiment according to the third aspect of the invention we, it is proposed that a kind of steam cooking vessel, it is characterised in that including: the hydropenia detecting device according to any one of above-described embodiment.
Steam cooking vessel according to an embodiment of the invention, by adding hydropenia detecting device in steam cooking vessel, allow to judge whether steam cooking vessel is in exsiccosis accurately, it is to avoid the electric power resource waste that circulating-heating causes, avoid interference the safety problem caused simultaneously.
The additional aspect of the present invention and advantage will part provide in the following description, and part will become apparent from the description below, or is recognized by the practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or the additional aspect of the present invention and advantage are from conjunction with will be apparent from easy to understand the accompanying drawings below description to embodiment, wherein:
Fig. 1 illustrates the schematic flow diagram of hydropenia detection method according to an embodiment of the invention；
Fig. 2 illustrates the schematic flow diagram of hydropenia detection method according to another embodiment of the present invention；
Fig. 3 illustrates the structural representation of hydropenia detecting device according to an embodiment of the invention；
Fig. 4 illustrates the profile of steam cooking vessel according to an embodiment of the invention.
Detailed description of the invention
In order to be more clearly understood that the above-mentioned purpose of the present invention, feature and advantage, below in conjunction with the drawings and specific embodiments, the present invention is further described in detail.It should be noted that when not conflicting, embodiments herein and the feature in embodiment can be mutually combined.
Elaborate a lot of detail in the following description so that fully understanding the present invention; but; the present invention can also adopt other to be different from other modes described here to implement, and therefore, protection scope of the present invention is by the restriction of following public specific embodiment.
Fig. 1 illustrates the schematic flow diagram of hydropenia detection method according to an embodiment of the invention.
As it is shown in figure 1, hydropenia detection method according to an embodiment of the invention, including: step 102, obtain the interval disconnected between connection of the heat-generating pipe being installed in described steam generator；Step 104, it is judged that described interval whether more than predetermined threshold, described interval greater than described predetermined threshold time, it is determined that described steam generator is in exsiccosis.
By obtaining the interval disconnecting and connecting of heat-generating pipe in steam generator, when the state that the water yield is sufficient, the interval that in steam generator, heat-generating pipe disconnects with connection will be shorter, then this interval is less than predetermined threshold, judge to be in water yield abundance state, and when exsiccosis, the time that steam generator natural cooling temperature reduces will be longer, then should interval greater than predetermined threshold, judge to be in exsiccosis, detect whether in this way to be in exsiccosis, simple in construction, level of integrated system is high, and with prior art in by switch float, the detection mode of temperature controller and three pieces of metallic plates is compared, detection mode is more accurate, reduce the probability of hydropenia wrong report, and it is lower in cost.
It addition, hydropenia detection method according to the above embodiment of the present invention, it is also possible to there is following additional technical characteristic:
According to one embodiment of present invention, also include: detect the temperature of described steam generator；Judge that whether the temperature of described steam generator is more than the first predetermined temperature, when the temperature of described steam generator is more than described first predetermined temperature, disconnects the heat-generating pipe of described steam generator, and starts timing；After disconnecting the heat-generating pipe of described steam generator, it is judged that whether the temperature of described steam generator, less than the second predetermined temperature, when the temperature of described steam generator is less than described second predetermined temperature, is connected the heat-generating pipe of described steam generator, and terminated timing；Obtaining the interval between described end timing and described beginning timing, wherein, described first predetermined temperature is more than described second predetermined temperature.
In the running of steam generator, when tempering phase or hydropenia, if be detected that the temperature of steam generator is higher than the first predetermined temperature, show that steam generator is overheated, now disconnect the heat-generating pipe of steam generator, and start timing, after a predetermined time, if be detected that the temperature of steam generator is lower than the second predetermined temperature, for ensureing the temperature stabilization of steam generator, avoid steam-generator temperature too low, then need to connect the heat-generating pipe of steam generator, now terminate timing, if this terminate timing with start timing interval greater than predetermined threshold, then illustrate that now equipment is already at exsiccosis.
According to one embodiment of present invention, before whether the described temperature judging described steam generator is less than the second predetermined temperature, also include: search described output relation table to obtain the output corresponding with described steam-generator temperature, supply water to described steam generator with described output, wherein, in described output relation table, storage has the temperature of described steam generator and the output corresponding with described steam-generator temperature.
By after disconnecting the heat-generating pipe of steam generator, control to supply water to steam generator, preferably, excessive water can be provided, if Water in Water Tanks amount is sufficient, excessive water then can be provided to steam generator, the temperature of steam generator will be reduced to the second predetermined temperature (or below second predetermined temperature) at short notice, namely the heat-generating pipe of steam generator can be connected at short notice, now the interval of the heat-generating pipe off and on of steam generator is certainly less than predetermined threshold, it is determined that water tank is in water yield abundance state；On the contrary, if water tank is in exsiccosis, then after disconnecting the heat-generating pipe of steam generator, cannot supply water to steam generator, the temperature of steam generator drops to the time of the second predetermined temperature (or below second predetermined temperature) will be long accordingly, now the interval of the heat-generating pipe off and on of steam generator is naturally larger than predetermined threshold, it is determined that water tank is in exsiccosis.
Certainly, interval and predetermined threshold relatively time, by providing excessive water after disconnecting the heat-generating pipe of steam generator, the rapid drop in temperature of steam generator can be made, the heat-generating pipe reducing steam generator disconnects and the interval connected, thus improving the resolution of hydropenia detection, improve the accuracy of hydropenia detection.
According to one embodiment of present invention, described predetermined threshold is relevant to the difference of described first predetermined temperature and described second predetermined temperature, and described first predetermined temperature is more big with the difference of described second predetermined temperature, and described predetermined threshold is more big.
Due to after disconnecting the heat-generating pipe of steam generator, the waste heat of the accumulation in steam generator still can make the temperature of steam generator continue to rise, when there being excessive water supply, can dropping to the second predetermined temperature within a certain period of time, therefore the difference of the first predetermined temperature and the second predetermined temperature also can affect the temperature of steam generator and is reduced to the time of the second predetermined temperature by the first predetermined temperature.
Specifically, the difference of the first predetermined temperature and the second predetermined temperature is more big, the time that then temperature of steam generator is reduced to the second predetermined temperature by the first predetermined temperature is more long, it is bigger that the setting of predetermined threshold also need to set accordingly, and the difference of the first predetermined temperature and the second predetermined temperature is more little, the time that then temperature of steam generator is reduced to the second predetermined temperature by the first predetermined temperature is more short, and it is less that the setting of predetermined threshold also need to set accordingly.
According to one embodiment of present invention, also include: when judging that described steam generator is in exsiccosis, point out described steam generator to be in exsiccosis, and disconnect the heat-generating pipe of described steam generator.
Judge steam generator (water tank, water tank to steam generator supply water) be in exsiccosis time, prompting steam generator be in exsiccosis, for instance: can pass through display interface show, report to the police or voice message prompting be in exsiccosis.When judging to be in exsiccosis, disconnect the heat-generating pipe of steam generator, avoid the electric power resource waste that circulating-heating causes on the one hand, the safety problem that steam generator dry combustion method causes can be avoided on the other hand.
Fig. 2 illustrate according to another embodiment of the present invention schematic flow diagram.
As in figure 2 it is shown, hydropenia detection method according to another embodiment of the present invention, idiographic flow includes:
Step 202, steam cooking vessel is when receiving the instruction started working, and steam cooking vessel is properly functioning.
Step 204, it is judged that whether the temperature of steam generator raises extremely, when tempering phase or hydropenia, the temperature of steam generator is all likely to abnormal rising, and the temperature anomaly of steam generator raises and then performs step 206, otherwise performs step 220.
Step 206, it is judged that whether the volume temperature of steam generation gas reaches the first predetermined temperature, the temperature of steam generator reaches the first predetermined temperature and then performs step 208, otherwise performs step 202.
Step 208, when the temperature of steam generator reaches the first predetermined temperature, it was shown that steam generator is overheated, then disconnects heat-generating pipe, starts timing.
Step 210, when the temperature of steam generator reaches the first predetermined temperature, disconnect heat-generating pipe, but due to the waste heat in steam generator, the temperature of steam generator still can rise, and when steam generator reaches specified temp, provides excessive water to steam generator, when excessive water supply or natural cooling, temperature is gradually reduced.
Step 212, it is judged that whether the temperature of steam generation gas reaches the second predetermined temperature, the temperature of steam generator reaches the second predetermined temperature and then performs step 214, otherwise performs step 210.
Step 214, when the temperature of steam generator reaches the second predetermined temperature, connects heat-generating pipe, terminates timing, and obtain the interval of the heat-generating pipe off and on of steam generator.
Step 216, it is judged that the interval of the heat-generating pipe off and on of steam generator whether more than predetermined threshold, the heat-generating pipe off and on of steam generator then perform step 218 interval greater than predetermined threshold, otherwise perform step 202.
Step 218, steam generator heat-generating pipe off and on interval greater than predetermined threshold time, it is determined that steam cooking vessel (steam generator) is in exsiccosis, quits work.
Step 220, it is judged that whether residue cooking time is zero, residue cooking time is zero, then show to have reached predetermined cooking time, then stop the work of steam cooking vessel, if residue cooking time is not zero, then needs to continue culinary art, then performs step 202.
Fig. 3 illustrates the structural representation of hydropenia detecting device according to an embodiment of the invention.
As it is shown on figure 3, hydropenia detecting device 300 according to an embodiment of the invention, including acquiring unit 302, for obtaining the interval between the disconnecting and connect of the heat-generating pipe that is installed in described steam generator；Judging unit 304, it is judged that described acquiring unit 302 obtain interval whether more than predetermined threshold, described interval greater than described predetermined threshold time, it is determined that described steam generator is in exsiccosis.
By obtaining the interval disconnecting and connecting of heat-generating pipe in steam generator, when the state that the water yield is sufficient, the interval that in steam generator, heat-generating pipe disconnects with connection will be shorter, then this interval is less than predetermined threshold, judge to be in water yield abundance state, and when exsiccosis, the time that steam generator natural cooling temperature reduces will be longer, then should interval greater than predetermined threshold, judge to be in exsiccosis, detect whether in this way to be in exsiccosis, simple in construction, level of integrated system is high, and with prior art in by switch float, the detection mode of temperature controller and three pieces of metallic plates is compared, detection mode is more accurate, reduce the probability of hydropenia wrong report, and it is lower in cost.
According to one embodiment of present invention, also include: detection unit 306, detect the temperature of described steam generator；Whether described judging unit 304 is additionally operable to the temperature judging described steam generator more than the first predetermined temperature, when the temperature of described steam generator is more than described first predetermined temperature, disconnects the heat-generating pipe of described steam generator, and starts timing；Whether described judging unit 304 is additionally operable to the temperature judging described steam generator less than the second predetermined temperature, when the temperature of described steam generator is less than described second predetermined temperature, connects the heat-generating pipe of described steam generator, and terminates timing；Described acquiring unit 302 is specifically for obtaining the interval between described end timing and described beginning timing, and wherein, described first predetermined temperature is more than described second predetermined temperature.
In the running of steam generator, when tempering phase or hydropenia, if be detected that the temperature of steam generator is higher than the first predetermined temperature, show that steam generator is overheated, now disconnect the heat-generating pipe of steam generator, and start timing, after a predetermined time, if be detected that the temperature of steam generator is lower than the second predetermined temperature, for ensureing the temperature stabilization of steam generator, avoid steam-generator temperature too low, then need to connect the heat-generating pipe of steam generator, now terminate timing, if this terminate timing with start timing interval greater than predetermined threshold, then illustrate that now equipment is already at exsiccosis.
According to one embodiment of present invention, before whether the described temperature judging described steam generator is less than the second predetermined temperature, described judging unit 304 is additionally operable to when the temperature of described steam generator is more than described first predetermined temperature, disconnect the heat-generating pipe of described steam generator, search described output relation table to obtain the output corresponding with described steam-generator temperature, supply water to described steam generator with described output, wherein, in described output relation table, storage has the temperature of described steam generator and the output corresponding with described steam-generator temperature.
By after disconnecting the heat-generating pipe of steam generator, control to supply water to steam generator, preferably, excessive water can be provided, if Water in Water Tanks amount is sufficient, excessive water then can be provided to steam generator, the temperature of steam generator will be reduced to the second predetermined temperature (or below second predetermined temperature) at short notice, namely the heat-generating pipe of steam generator can be connected at short notice, now the interval of the heat-generating pipe off and on of steam generator is certainly less than predetermined threshold, it is determined that water tank is in water yield abundance state；On the contrary, if water tank is in exsiccosis, then after disconnecting the heat-generating pipe of steam generator, cannot supply water to steam generator, the temperature of steam generator drops to the time of the second predetermined temperature (or below second predetermined temperature) will be long accordingly, now the interval of the heat-generating pipe off and on of steam generator is naturally larger than predetermined threshold, it is determined that water tank is in exsiccosis.
Certainly, interval and predetermined threshold relatively time, by providing excessive water after disconnecting the heat-generating pipe of steam generator, the rapid drop in temperature of steam generator can be made, the heat-generating pipe reducing steam generator disconnects and the interval connected, thus improving the resolution of hydropenia detection, improve the accuracy of hydropenia detection.
According to one embodiment of present invention, also include: Tip element 308, for when described judging unit judges that described steam generator is in exsiccosis, pointing out described steam generator to be in exsiccosis, and disconnect the heat-generating pipe of described steam generator.
Judge steam generator (water tank, water tank to steam generator supply water) be in exsiccosis time, prompting steam generator be in exsiccosis, for instance: can pass through display interface show, report to the police or voice message prompting be in exsiccosis.When judging to be in exsiccosis, disconnect the heat-generating pipe of steam generator, avoid the electric power resource waste that circulating-heating causes on the one hand, the safety problem that steam generator dry combustion method causes can be avoided on the other hand.
Fig. 4 illustrates the profile of steam cooking vessel according to an embodiment of the invention.
As shown in Figure 4, according to embodiments of the invention steam cooking vessel 400, including: the hydropenia detecting device 300 according to any one of above-described embodiment.
By adding hydropenia detecting device 300 in steam cooking vessel 400 so that can judge whether steam cooking vessel 400 is in exsiccosis accurately, it is to avoid the electric power resource waste that circulating-heating causes, avoid interference the safety problem caused simultaneously.
Specifically: steam cooking vessel 400 according to an embodiment of the invention, including: culinary art cavity one layer of heat-insulating heat-preserving material 418 of 402(cavity outer cladding), for utilize by steam (vapor) outlet 404 be delivered to culinary art cavity 402 steam to put into culinary art cavity 402 in food be heated, steam (vapor) outlet 404 is generally located on the side, middle and lower part of culinary art cavity 402, steam (vapor) outlet 404 connection can carry out heat accumulation and produce the steam generator 406 of steam, steam generator 406 is provided with temperature sensor 408, to detect steam generator 406 temperature, and the temperature of steam generator 406 is sent to control unit 410.Water supply pump 412(is regulated valve according to the temperature of steam generator 406 and adopts the form of water pump by control unit 410) and the heat-generating pipe 414 of steam generator 406 be controlled, to control the temperature of steam generator 406.
Wherein, water supply pump 412(direct current, exchange) water supply capacity have to be larger than the maximum amount of water that steam generator 406 can digest, as shown in table 1, be connected between steam generator 406 and water tank 416, supply water for steam generator 406.
Table 1
In general, the occurring mode of steam is that the heat-generating pipe 414 by steam generator 406 adds hot steam generator 406 and is filled with water cavity, water chamber temperature is allowed to rise, drive again water pump 412 condemn into water produce steam to explosive evaporation, steam can in steam generator 406 water chamber remaining without water cavity in mobile overheated, finally sprayed entrance culinary art cavity 402 by the steam (vapor) outlet 404 of steam generator 406 and food be heated.
The mode supplied water when water pump 412 is to adopt the batch (-type) water supply pattern of certain ON time, and this process can refine further.Such as, the steam generator 406 of 900W is adopted, it is possible to allow the steam that the water of 20.8ml all became 100 DEG C in 1 minute.So, steam generator 406 just can be allowed to be in normal operating conditions as long as supplying the water less than 20.8ml in one minute steam generator 406.And after output reduces, steam generator 406 can enter superheat state, say, that unnecessary heat energy can be converted into the temperature of steam generator 406 body, the temperature of steam generator 406 is made to rise and put aside.
As one comparatively preferred embodiment, steam generator 406 of the present invention generally has the runner design of gas superheat, make when without disconnecting heat-generating pipe 414 power supply circuits of steam generator 406, as long as output is suitable, the temperature of steam generator 406 just can long-time stable (be usually more than 100 DEG C) in set temperature.
So-called suitable output, as shown in table 2:
Table 2
As shown in table 2, the steam generator 406 of same 900W, output differs only 1ml, the theoretical limit temperature difference of steam generator 406 only 60 DEG C, so, by temperature sensor 408, the temperature of steam generator 406 is sent to control unit 410, just water supply accurately can be controlled.
When steam cooking vessel 400 brings into operation, owing to whole system existing the pipeline of water supply, it is likely to have water in supply channel, it is likely to anhydrous, in the process that steam generator 406 temperature rises, temperature at steam generator 406 just starts when reaching the first predetermined temperature (such as: 100 DEG C) to supply water in supply channel, if avoid just supplying water when arriving target equilibrium temperature, because supplying water not in time, cause the problem that steam generator 406 temperature upper punch is too urgent and has exceeded safe handling temperature.
When steam generator 406 reaches accurately to control the temperature section of water, for instance: 150 DEG C～170 DEG C, start the way of supplying water to finely tune ON time and supply water.Detailed process is: when the temperature of steam generator 406 reaches 150 DEG C, if the water supply deviation of water pump 412 own is 20 ± 5ml/min, so, it is 15ml/min that control unit 410 controls the output of water pump 412 correspondence, no matter the water supply capacity of water pump 412 itself is limit on the upper side or limit on the lower side, and the temperature of steam generator 406 all still may proceed to rise；And when the temperature of steam generator 406 is more than 170 DEG C, it is 25ml/min that control unit 410 controls the output of water pump 412 correspondence, no matter the water supply capacity of water pump 412 itself is limit on the upper side or limit on the lower side, and the temperature of steam generator 406 all can decline, only the situation of hydropenia.
The vaporization being additionally, since water can absorb a large amount of latent heat, causes that the cooling of steam generator 406 is flashy thing, it is conceivable that it is be short to Microsecond grade just can complete that 1 gram of water vapor to consume 3 seconds produced energy of steam heating device 406.
So, when having abundant water resources, described steam generator 406 body temperature just can fluctuate in the scope of 160 ± 10 DEG C, simultaneously, it is provided that the water yield to steam generator 406 is also limited in because of this adjustment in a fairly small scope and fluctuates.Ideally, the fluctuation of output can be 20ml ± 0.2ml/min.Certainly, in actually used process, due to the deviation of the processing technology of steam generator 406 itself, heat-generating pipe 414 power of steam generator 406, and the temperature measurement error of temperature sensor 408 itself, the fluctuation range that can control can be more relatively wide, generally not over the scope of ± 1ml/min.
On the basis of above-mentioned steam generating system, carry out dividing change to the output of the steam generator 406 setting temperature.Such as, if when cooking cavity 402 temperature and being set as 100 DEG C, the output being set in steam generator 406160 DEG C is 6.4ml/min, so, if when the temperature that the temperature sensor 420 cooking cavity 402 detects is 90 DEG C, the output of steam generator 406160 DEG C is set as 3.2ml/min, owing to the power of steam generator 406 heat-generating pipe 414 is constant, time needed for causing steam generator 406 temperature raising and lowering same degree also reduces half, namely the power of steam generator 406 can automatically adapt to the change of output and change the energy sent in culinary art cavity 402.
According to above-mentioned principle, if realizing accurate temperature adjustment function, such as 90 DEG C, when starting working, can be operated so that culinary art cavity 402 central temperature reaches 85 DEG C in the way of peak power, then switching to 100 DEG C of gears (output that generator is 160 DEG C sets 6.4ml/min) allows the temperature of culinary art cavity 402 still draw close to 90 DEG C, and when the central temperature of culinary art cavity 402 arrives 90 DEG C, generator switches to 90 DEG C of gears (output that generator is 160 DEG C sets 3.2ml/min).It is test, according to culinary art cavity 402, the output quite pressing close to 90 DEG C of energy requirements obtained owing to this sets, so, the central temperature of culinary art cavity 402 only there will be fuctuation within a narrow range (according to actual energy surplus or loss, temperature can rise and can drop), but, when temperature once more than 95 DEG C, generator switches to 80 DEG C of gears (output that generator is 160 DEG C sets 2.4ml/min), allow the high temperature that the energy sent in culinary art cavity 402 cannot maintain 95 DEG C again, the temperature of culinary art cavity 402 declines naturally, by that analogy, reciprocation cycle, just can reach the purpose of accurate temperature controlling.
Certainly, all settings are all amplified by the description above, in order to understand.It practice, the temperature of the different gear of switching can define completely at about 1 DEG C, thus reaching to be accurate to the control effect of 1 DEG C.But, this is just for same temperature sensor, when having changed other temperature sensors with different tolerance, because of the inaccuracy of himself thermometric, so always having some errors (being generally 3～5 DEG C) with culinary art cavity 402 actual temperature.
Such as: for the culinary art cavity 402 of about 24L, 160 DEG C of output patterns of steam generator are as shown in table 3:
Table 3
It should be noted that, no matter steam cooking vessel 400 is Operation at full power is in tempering phase, the operation that all according to the temperature information that temperature sensor 408 in steam generator 406 sends to control unit 410, the heat-generating pipe 414 in steam generator 406 can be turned off or be reclosed.
The main operational principle of the hydropenia detecting device of embodiments of the invention is: after the heat-generating pipe 414 of steam generator 406 disconnects, temperature sensor 408 detects that the temperature of steam generator 406 continues to rise, when the temperature of steam generator 406 reaches specified temp, water pump 412 can supply excessive water (being usually 1.25～5 times of 160 DEG C of outputs) to steam generator 406, make the rapid drop in temperature of steam generator 406, ensure its maintain heat-generating pipe 414 be disconnected to reclose enough short during this period of time, so as to clearly judge that steam generator 406 is in water or the state of hydropenia supply.
Specifically, when water yield abundance continues have water to supply, heat-generating pipe 414 disconnects (break-off signal, such as 195 DEG C) after, the steam generator 406 therefore heat generating temperature of front accumulation continues to rise, but because constantly there being the cold water from water tank 416 to supplement cooling so that it drops to heat-generating pipe 414 and recloses time of temperature (such as 175 DEG C) and become suitable short.In worst situation, when in table 3, the output of culinary art 40240 DEG C of gears of cavity only has 0.3 gram/minute, arrive almost with not similar less due to output, in this case, as long as there are some heat fluctuations in temperature ramp de in steam generator 406, its temperature is made to reach more high point, and when fall off rate change is little, it is possible to the situation (because the time span that this grade detects was too close to hydropenia determination time) that hydropenia is reported by mistake occurs.At this time, controlling when steam generator 406 temperature reaches specified level, supply excessive water just serves strong resolution effect.
Obviously, for cooking the gear of cavity more than 40240 DEG C, owing to the setting output of 160 DEG C is increasing, being disconnected to the time cycle reclosed from heat-generating pipe 414 only can be shorter and shorter, thermal fluctuation is also more and more less on the impact of steam generator 406 temperature fluctuation, and hydropenia testing result just more can be guaranteed.
In general, predetermined threshold can according to the disconnection of heat-generating pipe 414 time the temperature difference of the first predetermined temperature and the second predetermined temperature when connecting and generator material weight, actual setting can be as shown in table 4:
Table 4
Technical scheme is described in detail above in association with accompanying drawing, pass through technical scheme, steam generator heat-generating pipe disconnect with connect interval greater than predetermined threshold time, accurately judge that steam generator is in exsiccosis, the accuracy of steam cooking vessel hydropenia detection can be improved, avoid steam cooking vessel circulating-heating waste electric power resource on the one hand, on the other hand, it is to avoid the safety problem that dry combustion method causes.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within protection scope of the present invention.
Claims (6)
1. the hydropenia detection method for steam generator, it is characterised in that including:
Obtain the interval disconnected between connection of the heat-generating pipe being installed in described steam generator；
Judge that whether described interval is more than predetermined threshold, described interval greater than described predetermined threshold time, it is determined that described steam generator is in exsiccosis；Wherein,
The concrete steps of the interval disconnected between connection of the heat-generating pipe that described acquisition is installed in described steam generator include:
Detect the temperature of described steam generator；
Judge that whether the temperature of described steam generator is more than the first predetermined temperature, when the temperature of described steam generator is more than described first predetermined temperature, disconnects the heat-generating pipe of described steam generator, and starts timing；
After disconnecting the heat-generating pipe of described steam generator, it is judged that whether the temperature of described steam generator, less than the second predetermined temperature, when the temperature of described steam generator is less than described second predetermined temperature, is connected the heat-generating pipe of described steam generator, and terminated timing；
Obtain the interval between described end timing and described beginning timing,
Wherein, described first predetermined temperature is more than described second predetermined temperature；
Before whether the described temperature judging described steam generator is less than the second predetermined temperature, also include: search output relation table to obtain the output corresponding with the temperature of described steam generator, supply water to described steam generator with described output, wherein, in described output relation table, storage has the temperature of described steam generator and the output corresponding with described steam-generator temperature.
2. hydropenia detection method according to claim 1, it is characterized in that, described predetermined threshold is relevant to the difference of described first predetermined temperature and described second predetermined temperature, and described first predetermined temperature is more big with the difference of described second predetermined temperature, and described predetermined threshold is more big.
3. hydropenia detection method according to claim 1, it is characterised in that also include: when judging that described steam generator is in exsiccosis, point out described steam generator to be in exsiccosis, and disconnect the heat-generating pipe of described steam generator.
4. the hydropenia detecting device for steam generator, it is characterised in that including:
Acquiring unit, for obtaining the interval disconnected between connection of the heat-generating pipe being installed in described steam generator；
Judging unit, it is judged that described acquiring unit obtain interval whether more than predetermined threshold, described interval greater than described predetermined threshold time, it is determined that described steam generator is in exsiccosis；And
Detection unit, detects the temperature of described steam generator；Wherein,
Whether described judging unit is additionally operable to the temperature judging described steam generator more than the first predetermined temperature, when the temperature of described steam generator is more than described first predetermined temperature, disconnects the heat-generating pipe of described steam generator, and starts timing；
Whether described judging unit is additionally operable to the temperature judging described steam generator less than the second predetermined temperature, when the temperature of described steam generator is less than described second predetermined temperature, connects the heat-generating pipe of described steam generator, and terminates timing；
Described acquiring unit specifically for obtaining the interval between described end timing and described beginning timing,
Wherein, described first predetermined temperature is more than described second predetermined temperature；
Before whether the described temperature judging described steam generator is less than the second predetermined temperature, search output relation table to obtain the output corresponding with the temperature of described steam generator, supply water to described steam generator with described output, wherein, in described output relation table, storage has the temperature of described steam generator and the output corresponding with described steam-generator temperature.
5. hydropenia detecting device according to claim 4, it is characterized in that, also include: Tip element, for when described judging unit judges that described steam generator is in exsiccosis, point out described steam generator to be in exsiccosis, and disconnect the heat-generating pipe of described steam generator.
6. a steam cooking vessel, it is characterised in that including: the hydropenia detecting device as described in claim 4 or 5.
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| CN104939661B (en) * | 2015-07-06 | 2018-01-05 | 珠海格力电器股份有限公司 | Cooking pot and its control method and device |
| CN108851936B (en) * | 2017-05-16 | 2021-05-28 | 佛山市顺德区美的电热电器制造有限公司 | Control method and device for rice cooking of electric cooker |
| CN110604462B (en) * | 2018-06-15 | 2021-11-23 | 广东美的生活电器制造有限公司 | Control method of cooking appliance, cooking appliance and storage medium |
| CN108784372A (en) * | 2018-07-02 | 2018-11-13 | 深圳市道中创新科技有限公司 | Cistern water supply control method, equipment and the storage medium of existing Instant Drinks product vending machine |
| CN110881853B (en) * | 2018-09-11 | 2021-07-23 | 宁波方太厨具有限公司 | Control method of steam box |
| CN109431252A (en) * | 2018-10-23 | 2019-03-08 | 杭州老板电器股份有限公司 | Water shortage detection method, device and the intelligent appliance of intelligent appliance |
| CN109618422B (en) * | 2018-11-16 | 2021-11-23 | 中山市天隆燃具电器有限公司 | Heating control method of steam box |
| CN111513538A (en) * | 2019-02-02 | 2020-08-11 | 浙江苏泊尔家电制造有限公司 | Cooking utensil |
| CN111035275B (en) * | 2019-12-31 | 2021-09-24 | 广东美的厨房电器制造有限公司 | Control method, device, equipment and computer readable storage medium |
| CN113133665B (en) * | 2020-01-17 | 2022-10-04 | 九阳股份有限公司 | Dry burning prevention detection method for cooking utensil and cooking utensil |
| CN111938453A (en) * | 2020-07-15 | 2020-11-17 | 华帝股份有限公司 | Waterway system with condensation function, steam cooking equipment and control method thereof |
| CN111973000B (en) * | 2020-08-06 | 2023-05-09 | 华帝股份有限公司 | Evaporator control method and steam cooking device |
| CN114468746A (en) * | 2020-11-13 | 2022-05-13 | 杭州九阳小家电有限公司 | Control method of disc type water storage steam generator and cooking equipment |
| CN112932254B (en) * | 2021-01-28 | 2022-05-17 | 宁波方太厨具有限公司 | Water quantity detection structure and detection method for water tank of cooking equipment and electric steam box |
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| KR101059818B1 (en) * | 2007-01-08 | 2011-08-26 | 삼성전자주식회사 | Steam generator and cooking apparatus having same and control method thereof |
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| JP5308222B2 (en) * | 2009-04-21 | 2013-10-09 | ホシザキ電機株式会社 | Steam generator |
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